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NATURE STUDY MADE EASY 



class discover cause. Darkness + heat 

 + moisture are necessary to germination. 



II. Bring into room two cut flower 

 stalks with leaves geranium or bean 

 seedlings. Place one in glass of water. 

 Let other lie on desk. At end of hour 

 compare. Draw from class cause of 

 wilted condition. Same conditions occur 

 when plant is grown in dark cellar. Re- 

 fer to potato budding (buds white) ; white 

 stems of celery. (Show celery and potato.) 

 Hence, light and heat necessary to form 

 green coloring matter in plants. Refer 

 to loss of green in leaves in Fall, when 

 sun's rays grow weaker. What happens 

 when plants are not watered? when 

 grown in darkness ? Why do they die ? 



III. Food of two kinds, liquid and 

 gaseous. Ask class how obtained 

 from soil, through roots. Show by 

 illustration how roots draw up water. 

 Show how water in soil dissolves min- 

 erals (refer to sugar in tea) through 

 which it passes and feeds plant with this 

 enriched moisture. Hence, wheat con- 

 tains potash. Show mineral solution. 

 Many plants contain iron. All get am- 

 monia through rain water. 



Gaseous food obtained from airthrough 

 leaves and stem. 



Explain how under influence of light 

 and heat plants make starch on which 

 they live. 



Explain work of leaves by day, breath- 

 ing in gaseous food from atmosphere, 

 and breathing out different substances at 

 night. Show stomates or breathing pores 

 of leaf. Illustrate by immersing a leaf 

 in water. 



II. GROWING 

 PLANTS 

 NEED 



(Moisture. 

 Air. 

 Light. 



Which give 



Gaseous J 



\ food. 



III. HOW OB- 

 TAINED 



[Moisture from rain and 



soil through roots. 

 Air from atmosphere 



through leaves and 



stems. 

 Light from atmosphere 



through leaves and 



stems. 

 Warmth from atmosphere 



through leaves and 



stems. 



STOMATES OK BREATHING PORES OF LEAP 



